Ash-sifting device



Dec. 14 1926.

v w. E..FULLER ASH sxwme nsvrca.

" Filed Feb. 6, 1925 2 Sheets-Sheet 1 ATTORNEY.

Dec. 14 {1926.

w. E. FULLER ASH SIFTING DEVICE e, 1926 2 Sheets-Sheet 2 Filed Feb,

lN-VENTOR ATTORNEY WINEESE Patented Dec. 14, 1926.

WALTER E. FULLER, OF ROANOKE. VIRGINIA.

ASH-SIFTING DEVICE.

Application filed February 6, 1926.

This invention relates to attachment for furnaces, stoves or the like,and has for its object the provision of a novel device adapted to bemounted at the bottom of the ashpit of a furnace and acting to sift theashes and conduct away the dust so that only clean cinders will be leftwhich may be shoveled out of the ashpit for subsequent use.

An important object is to provide a device,

10 of this character embodying motor operated suction means forwithdrawing the dust, the motor of the suction producing mechanism alsoacting tov effect vibration of a sifting screen so that the device willfunction prop- 15 erly and rapidly. r

Yet another object is to provide a device of this character which may beinstalled beneath a furnace with comparatively small cost and in an easymanner, which will be 20 simple to operate, positive in action,efficient and durable in service, and-a general improvement in the art.

lVith the above and other objects and advantages in view, the inventionconsists in 25 the details of construction and the arrangement andcombination of parts to'be hereinafter more fully described and claimed,and illustrated in the accompanying drawings, in which Figure 1 is afront elevation of a furnace, partly in section, showing the inventionapplied thereto and showing the outlet therefrom leading into a flue orthe like.

Figure 2 is a horizontal section through 35 the ashpit showing a planview of the device.

Figure 3 is a horizontal section taken on the line 33 of Figure 1.

Figure 4 is a detail end elevation of the suction producing device and,agitating 4 means for the screen.

Figure 5 is a detail view of the connection between the motor operatedarm and the link member connected with the shaker or screen, and

Figure 6 is a detail perspective view of a link element forming part ofthe construction.

Referring more particularly to the drawings, the letter A designates afurnace hav- 50 ing the usual ashpit B beneath which is located thepresent device.

In carrying out the invention I provide a casing or receptacle 10mounted within a recess 11 in the cellar floor beneath the ashpit B, thereceptacle 10 being of partially spherical shape and provided at oneside Serial No. 86.632.

with a relatively small conduit 12 which entends upwardly slightlybeyond the cellar floor. Embedded or otherwise suitably mounted in thefloor immediately beneath the a'shpit is a ring member 13 having adepending inwardly extending flange 1e located within the receptacle 10.At the center of the bottom of the receptacle is a thickened portion 15which constitutes a bearing upper end rotatably supporting a boss orsocket member 17 formed on the underside ofa screen member 18 which iscircular in shape and which includes a plurality of radial arms 19carrying a sheet or disk 20 of suitable wire screen of proper mesh.

It is of course intended that the screen 18 be rotatable and to limitthe movement thereof in bothdirections, it is provided at its undersidewitha depending projection 21 operating between a pair of spaced lugs 22formed upon or carried by the receptacle 10. The rotatable screen memberis also provided with an upstanding arm 23 formed .with a socket member24 for a purpose to be described.

Located upon the basement floor at some convenient point, preferablynearthe furnace, is a motor driven fan 25 not illustrated in particulardetail but of course including mechanism operating within a casing 26.

eading from this casing is an outlet pipe 27 with which connects aflexible conduit 28 terminating in a nozzle member or pipe 29 leadingthrough the wall into the flue or simply out doors as may be preferred.Connected with the conduit 12 is an inlet pipe 30 which leads into thecenter of the fan casing 25 as clearly indicated.

The motor shaft 31 carries a disk 32 on which is mounted an eccentricpin 33 en gaged within an elongated slot 34 in one arm of an angle lever35 pivoted at 36 upon the frame of the suction or fan device. This anglelever further includes an arm-37 with which is pivotally connected, at38, a link 39 carrying a ball head 40 engaged within the socket member24. The link 39 extends through a suitable opening 41 in the ash pit ofthe furnace as clearly indicated in Figure 1.

In the operation of the device, it will be readily apparent that ashesfalling through the grate B of the furnace will accumulate upon thescreen 18. Whenever it is desired for a vertical shaft 16 which has itsi an electric motor and a suitable fan blade to sift the ashes, it isclearly necessary that current be applied to the electric motor of thefan device so that the fan will be put in operation. Quite naturally,this fan will act to produce. suction through the conduit 12 and withinthe receptacle 1O beneath the screen 18. At the same time, the rotationof the motor shaft will cause the angle lever to be moved so that thelink 39 will be correspondingly moved into a lengthwise direction so asto impart an oscillatory movement to the screen 18. Quite naturally,when the ashes tall upon the screen the movement thereof will cause thedust and fine matter to pass through into the receptacle 10 from whichthe dust and the like will be withdrawn through the conduit 1-2 and fandevice and discharged through the conduit 28 and pipe or nozzle member29 either out doorsor into the hue, as the case may be. Obviously,

the sitting of ashes will be thus accomplished in a very simplem-anner'and after a few moments operation it is clear that only clean cinderswill remain in the ash pit above the screen device, it being readilypossible to remove or shovel out the cinders for subsequent use. It isreally believed that the construction, operation and advantages will bereadily apparent to one skilled in the art without further explanation.

I \Vhile I have shown and described the preferred embodiment of theinvention, it should be understood that I reserve thc right to make suchchanges in the form, construction and arrangement of parts as will notdepart from the spirit of the invention or the scope of the subjo inedclaims.

Having thus described the invention, I claim:

1. In combination with the ash pit of a furnace, a receptacle mounted inthe floor therebe'low, and havlng a discharge conduit from the bottomthereof, a ring-like bearing member located above and leading into thereceptacle, a screen rotatably mounted upon said bearing member, asuction fan device connected with said outlet and having a dischargepipe, and crank means driven by the suction fan device and operativelyconnected with the screen for oscillating the latter.

2. In combination with the ash pit of a furnace, a receptacle located inthe floor therebelo-w, a discharge conduit. leading from the receptacle,screen rotatably mounted above the receptacle, means for supporting thescreen, means for limiting oscillatory movement of the screen, a suctionan device connected with said discharge conduit, and mechanical meansoperatively connected with the tan device and with the screen foroscillating the latter, said means comprising a pivoted angle leverhaving one arm provided with a link connection to the screen, and aneccentric pin carried by the ian shatt and engaging the other arm of theangle lever or moving the same.

3. A device of the character described, a receptacle located in thefloor beneath the ash pit of a tiin'n ace and having a dischargeconduit, a bearing member located above the receptacle, a supportingshaft rising centrally from the receptacle, a screen device rotatablymounted upon the shaft and having limited oscillatory movement, asuction tan mechanism power driven and connected with said dischargecond-uit having an outlet pipe, :1 disk on the shaft of the tan carryingan cecentric pin, an angle lever having a slotted arm accommodating saidpin, and a link connected with the other arm of the angle lever andpivotally connected with the screen for oscillating the same.

In testimony whereof I aiiix my signature.

WVALTER E. FULLER.

